java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 15:23:05,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 15:23:05,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 15:23:05,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 15:23:05,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 15:23:05,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 15:23:05,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 15:23:05,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 15:23:05,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 15:23:05,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 15:23:05,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 15:23:05,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 15:23:05,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 15:23:05,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 15:23:05,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 15:23:05,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 15:23:05,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 15:23:05,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 15:23:05,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 15:23:05,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 15:23:05,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 15:23:05,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 15:23:05,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 15:23:05,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 15:23:05,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 15:23:05,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 15:23:05,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 15:23:05,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 15:23:05,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 15:23:05,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 15:23:05,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 15:23:05,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 15:23:05,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 15:23:05,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 15:23:05,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 15:23:05,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 15:23:05,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 15:23:05,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 15:23:05,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 15:23:05,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 15:23:05,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 15:23:05,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 15:23:05,782 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 15:23:05,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 15:23:05,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 15:23:05,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 15:23:05,784 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 15:23:05,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 15:23:05,784 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 15:23:05,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 15:23:05,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 15:23:05,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 15:23:05,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 15:23:05,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 15:23:05,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 15:23:05,786 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 15:23:05,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 15:23:05,786 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 15:23:05,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 15:23:05,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 15:23:05,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 15:23:05,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 15:23:05,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 15:23:05,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:23:05,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 15:23:05,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 15:23:05,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 15:23:05,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 15:23:05,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 15:23:05,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 15:23:05,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 15:23:06,110 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 15:23:06,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 15:23:06,130 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 15:23:06,132 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 15:23:06,132 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 15:23:06,133 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c [2019-10-07 15:23:06,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8db22830f/d05b7098a748436d9ac5b29a57c38f31/FLAGdd64ddc02 [2019-10-07 15:23:06,726 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 15:23:06,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c [2019-10-07 15:23:06,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8db22830f/d05b7098a748436d9ac5b29a57c38f31/FLAGdd64ddc02 [2019-10-07 15:23:07,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8db22830f/d05b7098a748436d9ac5b29a57c38f31 [2019-10-07 15:23:07,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 15:23:07,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 15:23:07,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 15:23:07,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 15:23:07,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 15:23:07,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:23:07" (1/1) ... [2019-10-07 15:23:07,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671e4bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:23:07, skipping insertion in model container [2019-10-07 15:23:07,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:23:07" (1/1) ... [2019-10-07 15:23:07,056 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 15:23:07,114 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 15:23:07,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:23:07,584 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 15:23:07,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:23:07,743 INFO L192 MainTranslator]: Completed translation [2019-10-07 15:23:07,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:23:07 WrapperNode [2019-10-07 15:23:07,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 15:23:07,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 15:23:07,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 15:23:07,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 15:23:07,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:23:07" (1/1) ... [2019-10-07 15:23:07,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:23:07" (1/1) ... [2019-10-07 15:23:07,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:23:07" (1/1) ... [2019-10-07 15:23:07,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:23:07" (1/1) ... [2019-10-07 15:23:07,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:23:07" (1/1) ... [2019-10-07 15:23:07,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:23:07" (1/1) ... [2019-10-07 15:23:07,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:23:07" (1/1) ... [2019-10-07 15:23:07,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 15:23:07,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 15:23:07,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 15:23:07,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 15:23:07,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:23:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:23:07,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 15:23:07,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 15:23:07,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 15:23:07,911 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-07 15:23:07,911 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-07 15:23:07,911 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-07 15:23:07,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-07 15:23:07,911 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-07 15:23:07,912 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-07 15:23:07,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-07 15:23:07,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-07 15:23:07,912 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 15:23:07,912 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 15:23:07,913 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 15:23:07,913 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 15:23:07,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 15:23:07,913 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 15:23:07,913 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 15:23:07,914 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 15:23:07,914 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 15:23:07,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 15:23:07,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 15:23:07,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 15:23:07,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 15:23:07,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 15:23:07,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 15:23:07,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 15:23:07,915 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 15:23:07,915 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 15:23:07,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2019-10-07 15:23:07,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2019-10-07 15:23:07,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2019-10-07 15:23:07,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2019-10-07 15:23:07,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2019-10-07 15:23:07,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2019-10-07 15:23:07,917 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-07 15:23:07,917 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2019-10-07 15:23:07,917 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2019-10-07 15:23:07,917 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-07 15:23:07,917 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-07 15:23:07,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-07 15:23:07,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-07 15:23:07,918 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-07 15:23:07,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-07 15:23:07,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-07 15:23:07,918 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-07 15:23:07,919 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-07 15:23:07,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-07 15:23:07,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-07 15:23:07,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-07 15:23:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 15:23:07,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 15:23:07,920 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 15:23:07,920 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-07 15:23:07,920 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-07 15:23:07,920 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-07 15:23:07,920 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-07 15:23:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-07 15:23:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-07 15:23:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-07 15:23:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-07 15:23:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 15:23:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 15:23:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 15:23:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-07 15:23:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 15:23:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 15:23:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-07 15:23:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 15:23:07,923 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 15:23:07,923 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 15:23:07,923 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 15:23:07,923 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 15:23:07,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 15:23:07,923 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 15:23:07,924 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 15:23:07,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 15:23:07,924 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 15:23:07,924 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 15:23:07,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 15:23:07,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 15:23:07,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 15:23:07,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 15:23:07,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 15:23:07,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 15:23:07,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 15:23:07,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 15:23:07,925 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 15:23:07,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 15:23:07,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 15:23:07,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 15:23:07,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 15:23:07,926 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-07 15:23:07,926 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-07 15:23:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-07 15:23:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-07 15:23:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-07 15:23:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-07 15:23:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-07 15:23:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-07 15:23:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2019-10-07 15:23:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-07 15:23:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2019-10-07 15:23:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2019-10-07 15:23:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-07 15:23:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2019-10-07 15:23:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2019-10-07 15:23:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-07 15:23:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2019-10-07 15:23:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2019-10-07 15:23:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2019-10-07 15:23:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 15:23:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 15:23:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 15:23:09,617 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 15:23:09,618 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-07 15:23:09,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:23:09 BoogieIcfgContainer [2019-10-07 15:23:09,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 15:23:09,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 15:23:09,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 15:23:09,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 15:23:09,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:23:07" (1/3) ... [2019-10-07 15:23:09,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec0785a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:23:09, skipping insertion in model container [2019-10-07 15:23:09,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:23:07" (2/3) ... [2019-10-07 15:23:09,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec0785a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:23:09, skipping insertion in model container [2019-10-07 15:23:09,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:23:09" (3/3) ... [2019-10-07 15:23:09,627 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_productSimulator.cil.c [2019-10-07 15:23:09,636 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 15:23:09,644 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 15:23:09,655 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 15:23:09,692 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 15:23:09,692 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 15:23:09,692 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 15:23:09,692 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 15:23:09,697 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 15:23:09,697 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 15:23:09,698 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 15:23:09,698 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 15:23:09,730 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2019-10-07 15:23:09,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-07 15:23:09,742 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:23:09,743 INFO L385 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:23:09,745 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:23:09,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:23:09,751 INFO L82 PathProgramCache]: Analyzing trace with hash 405742149, now seen corresponding path program 1 times [2019-10-07 15:23:09,760 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:23:09,760 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:09,760 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:09,760 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:23:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:23:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-07 15:23:10,179 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:10,180 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:23:10,180 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 15:23:10,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 15:23:10,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 15:23:10,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 15:23:10,202 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 2 states. [2019-10-07 15:23:10,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:23:10,255 INFO L93 Difference]: Finished difference Result 348 states and 438 transitions. [2019-10-07 15:23:10,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 15:23:10,257 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 76 [2019-10-07 15:23:10,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:23:10,272 INFO L225 Difference]: With dead ends: 348 [2019-10-07 15:23:10,272 INFO L226 Difference]: Without dead ends: 183 [2019-10-07 15:23:10,277 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 15:23:10,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-10-07 15:23:10,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2019-10-07 15:23:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2019-10-07 15:23:10,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 224 transitions. [2019-10-07 15:23:10,345 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 224 transitions. Word has length 76 [2019-10-07 15:23:10,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:23:10,347 INFO L462 AbstractCegarLoop]: Abstraction has 183 states and 224 transitions. [2019-10-07 15:23:10,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 15:23:10,347 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 224 transitions. [2019-10-07 15:23:10,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-07 15:23:10,352 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:23:10,352 INFO L385 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:23:10,353 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:23:10,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:23:10,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1660428068, now seen corresponding path program 1 times [2019-10-07 15:23:10,354 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:23:10,354 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:10,354 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:10,354 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:10,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:23:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:23:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-07 15:23:10,568 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:10,569 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:23:10,569 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:23:10,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:23:10,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:23:10,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:23:10,578 INFO L87 Difference]: Start difference. First operand 183 states and 224 transitions. Second operand 3 states. [2019-10-07 15:23:10,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:23:10,614 INFO L93 Difference]: Finished difference Result 294 states and 359 transitions. [2019-10-07 15:23:10,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:23:10,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-10-07 15:23:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:23:10,618 INFO L225 Difference]: With dead ends: 294 [2019-10-07 15:23:10,619 INFO L226 Difference]: Without dead ends: 175 [2019-10-07 15:23:10,621 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:23:10,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-10-07 15:23:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2019-10-07 15:23:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-10-07 15:23:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 213 transitions. [2019-10-07 15:23:10,641 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 213 transitions. Word has length 77 [2019-10-07 15:23:10,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:23:10,641 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 213 transitions. [2019-10-07 15:23:10,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:23:10,642 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 213 transitions. [2019-10-07 15:23:10,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-07 15:23:10,645 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:23:10,645 INFO L385 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:23:10,646 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:23:10,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:23:10,646 INFO L82 PathProgramCache]: Analyzing trace with hash -2063576827, now seen corresponding path program 1 times [2019-10-07 15:23:10,646 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:23:10,646 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:10,647 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:10,647 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:10,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:23:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:23:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-07 15:23:10,939 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:10,940 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:23:10,940 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 15:23:10,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 15:23:10,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 15:23:10,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-07 15:23:10,943 INFO L87 Difference]: Start difference. First operand 175 states and 213 transitions. Second operand 9 states. [2019-10-07 15:23:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:23:12,223 INFO L93 Difference]: Finished difference Result 499 states and 622 transitions. [2019-10-07 15:23:12,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 15:23:12,223 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2019-10-07 15:23:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:23:12,234 INFO L225 Difference]: With dead ends: 499 [2019-10-07 15:23:12,235 INFO L226 Difference]: Without dead ends: 363 [2019-10-07 15:23:12,239 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-07 15:23:12,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2019-10-07 15:23:12,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 351. [2019-10-07 15:23:12,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2019-10-07 15:23:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 437 transitions. [2019-10-07 15:23:12,321 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 437 transitions. Word has length 81 [2019-10-07 15:23:12,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:23:12,322 INFO L462 AbstractCegarLoop]: Abstraction has 351 states and 437 transitions. [2019-10-07 15:23:12,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 15:23:12,322 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 437 transitions. [2019-10-07 15:23:12,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-07 15:23:12,326 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:23:12,327 INFO L385 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:23:12,327 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:23:12,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:23:12,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1406139330, now seen corresponding path program 1 times [2019-10-07 15:23:12,328 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:23:12,328 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:12,328 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:12,328 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:12,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:23:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:23:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-07 15:23:12,491 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:12,491 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:23:12,491 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 15:23:12,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:23:12,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:23:12,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 15:23:12,494 INFO L87 Difference]: Start difference. First operand 351 states and 437 transitions. Second operand 7 states. [2019-10-07 15:23:13,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:23:13,429 INFO L93 Difference]: Finished difference Result 928 states and 1262 transitions. [2019-10-07 15:23:13,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 15:23:13,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2019-10-07 15:23:13,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:23:13,441 INFO L225 Difference]: With dead ends: 928 [2019-10-07 15:23:13,441 INFO L226 Difference]: Without dead ends: 616 [2019-10-07 15:23:13,443 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-07 15:23:13,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-07 15:23:13,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 559. [2019-10-07 15:23:13,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2019-10-07 15:23:13,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 709 transitions. [2019-10-07 15:23:13,536 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 709 transitions. Word has length 86 [2019-10-07 15:23:13,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:23:13,537 INFO L462 AbstractCegarLoop]: Abstraction has 559 states and 709 transitions. [2019-10-07 15:23:13,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:23:13,537 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 709 transitions. [2019-10-07 15:23:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-07 15:23:13,543 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:23:13,543 INFO L385 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:23:13,544 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:23:13,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:23:13,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1497411186, now seen corresponding path program 1 times [2019-10-07 15:23:13,544 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:23:13,545 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:13,545 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:13,545 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:13,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:23:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:23:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-07 15:23:13,911 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:13,911 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:23:13,912 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 15:23:13,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 15:23:13,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 15:23:13,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2019-10-07 15:23:13,914 INFO L87 Difference]: Start difference. First operand 559 states and 709 transitions. Second operand 14 states. [2019-10-07 15:23:15,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:23:15,808 INFO L93 Difference]: Finished difference Result 1584 states and 2094 transitions. [2019-10-07 15:23:15,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 15:23:15,808 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 114 [2019-10-07 15:23:15,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:23:15,817 INFO L225 Difference]: With dead ends: 1584 [2019-10-07 15:23:15,818 INFO L226 Difference]: Without dead ends: 1064 [2019-10-07 15:23:15,821 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2019-10-07 15:23:15,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2019-10-07 15:23:15,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1042. [2019-10-07 15:23:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2019-10-07 15:23:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1358 transitions. [2019-10-07 15:23:15,910 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1358 transitions. Word has length 114 [2019-10-07 15:23:15,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:23:15,911 INFO L462 AbstractCegarLoop]: Abstraction has 1042 states and 1358 transitions. [2019-10-07 15:23:15,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 15:23:15,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1358 transitions. [2019-10-07 15:23:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-07 15:23:15,917 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:23:15,917 INFO L385 BasicCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:23:15,917 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:23:15,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:23:15,918 INFO L82 PathProgramCache]: Analyzing trace with hash 600472367, now seen corresponding path program 1 times [2019-10-07 15:23:15,918 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:23:15,918 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:15,918 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:15,919 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:15,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:23:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:23:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-07 15:23:16,120 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:16,120 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:23:16,120 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 15:23:16,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 15:23:16,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 15:23:16,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 15:23:16,122 INFO L87 Difference]: Start difference. First operand 1042 states and 1358 transitions. Second operand 9 states. [2019-10-07 15:23:17,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:23:17,364 INFO L93 Difference]: Finished difference Result 3312 states and 4435 transitions. [2019-10-07 15:23:17,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 15:23:17,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2019-10-07 15:23:17,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:23:17,383 INFO L225 Difference]: With dead ends: 3312 [2019-10-07 15:23:17,384 INFO L226 Difference]: Without dead ends: 2517 [2019-10-07 15:23:17,388 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-07 15:23:17,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2019-10-07 15:23:17,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2187. [2019-10-07 15:23:17,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2187 states. [2019-10-07 15:23:17,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 2862 transitions. [2019-10-07 15:23:17,552 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 2862 transitions. Word has length 117 [2019-10-07 15:23:17,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:23:17,553 INFO L462 AbstractCegarLoop]: Abstraction has 2187 states and 2862 transitions. [2019-10-07 15:23:17,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 15:23:17,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 2862 transitions. [2019-10-07 15:23:17,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-07 15:23:17,558 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:23:17,559 INFO L385 BasicCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:23:17,559 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:23:17,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:23:17,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1485618468, now seen corresponding path program 1 times [2019-10-07 15:23:17,560 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:23:17,560 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:17,560 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:17,560 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:17,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:23:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:23:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-07 15:23:17,693 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:17,693 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:23:17,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:23:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:23:17,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 15:23:17,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:23:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-07 15:23:17,992 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:23:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-07 15:23:18,293 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 15:23:18,293 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-07 15:23:18,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:23:18,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:23:18,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 15:23:18,296 INFO L87 Difference]: Start difference. First operand 2187 states and 2862 transitions. Second operand 3 states. [2019-10-07 15:23:18,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:23:18,492 INFO L93 Difference]: Finished difference Result 4657 states and 6283 transitions. [2019-10-07 15:23:18,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:23:18,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2019-10-07 15:23:18,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:23:18,510 INFO L225 Difference]: With dead ends: 4657 [2019-10-07 15:23:18,510 INFO L226 Difference]: Without dead ends: 2509 [2019-10-07 15:23:18,520 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 15:23:18,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2019-10-07 15:23:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2509. [2019-10-07 15:23:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2509 states. [2019-10-07 15:23:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3269 transitions. [2019-10-07 15:23:18,735 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3269 transitions. Word has length 163 [2019-10-07 15:23:18,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:23:18,737 INFO L462 AbstractCegarLoop]: Abstraction has 2509 states and 3269 transitions. [2019-10-07 15:23:18,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:23:18,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3269 transitions. [2019-10-07 15:23:18,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-07 15:23:18,747 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:23:18,748 INFO L385 BasicCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:23:18,954 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:23:18,955 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:23:18,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:23:18,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1870702604, now seen corresponding path program 1 times [2019-10-07 15:23:18,957 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:23:18,957 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:18,958 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:18,958 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:23:18,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:23:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:23:19,170 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-07 15:23:19,171 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:23:19,171 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:23:19,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:23:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:23:19,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 15:23:19,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:23:19,684 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-07 15:23:19,684 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:23:20,374 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-07 15:23:20,374 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 15:23:20,410 INFO L162 IcfgInterpreter]: Started Sifa with 116 locations of interest [2019-10-07 15:23:20,410 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 15:23:20,417 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 15:23:20,425 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 15:23:20,425 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 15:23:30,474 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 482 [2019-10-07 15:23:32,017 WARN L191 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-07 15:23:32,188 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 490 [2019-10-07 15:23:32,393 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 490 [2019-10-07 15:23:32,619 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 490 [2019-10-07 15:23:32,939 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:23:33,157 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:23:33,368 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:23:33,639 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:23:33,975 WARN L191 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 578 DAG size of output: 576 [2019-10-07 15:23:34,117 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:23:34,302 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:23:34,438 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:23:34,561 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:23:34,706 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:23:34,717 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 211 for LOIs [2019-10-07 15:23:35,002 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 545 [2019-10-07 15:23:35,003 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 582 for LOIs [2019-10-07 15:23:35,121 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-10-07 15:23:35,236 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-10-07 15:23:35,418 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-07 15:23:35,549 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-10-07 15:23:35,690 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 582 [2019-10-07 15:23:35,861 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-07 15:23:36,004 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:36,131 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:36,349 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-07 15:23:36,601 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 630 DAG size of output: 584 [2019-10-07 15:23:36,721 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:36,908 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-07 15:23:37,052 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:37,191 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:37,361 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-07 15:23:37,477 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:37,593 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:37,767 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-07 15:23:37,890 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:38,049 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:38,219 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-07 15:23:38,335 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:38,452 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:38,622 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-07 15:23:38,737 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:38,876 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:39,058 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-07 15:23:39,175 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:39,296 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:39,467 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-07 15:23:39,582 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:39,700 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:39,921 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-07 15:23:40,036 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:40,152 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:40,322 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-07 15:23:40,438 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:40,565 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 584 [2019-10-07 15:23:40,735 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 628 [2019-10-07 15:23:41,014 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:23:41,018 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 15:23:41,029 INFO L168 Benchmark]: Toolchain (without parser) took 33986.11 ms. Allocated memory was 137.4 MB in the beginning and 914.4 MB in the end (delta: 777.0 MB). Free memory was 101.2 MB in the beginning and 149.0 MB in the end (delta: -47.8 MB). Peak memory consumption was 729.2 MB. Max. memory is 7.1 GB. [2019-10-07 15:23:41,029 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-07 15:23:41,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.14 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 101.0 MB in the beginning and 163.5 MB in the end (delta: -62.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2019-10-07 15:23:41,036 INFO L168 Benchmark]: Boogie Preprocessor took 93.97 ms. Allocated memory is still 200.8 MB. Free memory was 163.5 MB in the beginning and 158.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2019-10-07 15:23:41,042 INFO L168 Benchmark]: RCFGBuilder took 1778.85 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 158.7 MB in the beginning and 127.2 MB in the end (delta: 31.5 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. [2019-10-07 15:23:41,047 INFO L168 Benchmark]: TraceAbstraction took 31403.57 ms. Allocated memory was 232.3 MB in the beginning and 914.4 MB in the end (delta: 682.1 MB). Free memory was 127.2 MB in the beginning and 149.0 MB in the end (delta: -21.8 MB). Peak memory consumption was 660.3 MB. Max. memory is 7.1 GB. [2019-10-07 15:23:41,050 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.14 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 101.0 MB in the beginning and 163.5 MB in the end (delta: -62.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.97 ms. Allocated memory is still 200.8 MB. Free memory was 163.5 MB in the beginning and 158.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1778.85 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 158.7 MB in the beginning and 127.2 MB in the end (delta: 31.5 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31403.57 ms. Allocated memory was 232.3 MB in the beginning and 914.4 MB in the end (delta: 682.1 MB). Free memory was 127.2 MB in the beginning and 149.0 MB in the end (delta: -21.8 MB). Peak memory consumption was 660.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...